Need reference to a Working example of Ontology

Question

I got introduced to OWL here and here. And also seen few examples like... http://www.co-ode.org/ontologies/pizza/pizza.owl

How should I run this example? Are there any tools to run these OWL files?

Is there any blog/site to see a working example of Ontology? An example to say..."This is the difference that Ontology makes..." kind of.

Answer 1

That's what I found on the web: a Java framework for building Semantic Web applications. Looks like it can read/process OWL formatted ontologies.